7.8 Exit Ticket: Combined & Joint Variation

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2 questions

Required

a varies jointly as b and the square of c

If b = 0.1, c = 0.6, then a = 360,  

k = _______

If b = 0.2, c = 0.8, then a = _______

Required

The time required to process a shipment of goods at Wal-Mart varies directly with the number of items and inversely with the number of workers assigned. If 15,000 items can be processed by 8 workers in 3600 minutes, then how long would it take 12 workers to process 20,000 items?